package uk.ac.leeds.ccg.cluster;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
//import com.sun.java.util.collections.*;
//change for 1.2!
import uk.ac.leeds.ccg.geotools.*;
import uk.ac.leeds.ccg.raster.*;

/** Random search method
 */

public class Random extends SimpleMethod implements Method, Runnable
{
    // Members
    Database database;
    Results results;
    Shader shader;                     // Geotools shader       
    GeoRectangle geoRectangle = null;    // Geotools geoRectangle
    RandomParameters parameters = new RandomParameters();
    RandomParametersViewer randomParametersViewer = new RandomParametersViewer(parameters);

    // Methods
    public String toString(){return "Random";}
    public Parameters getParameters(){return parameters;}
    public ParametersViewer getParametersViewer(){return randomParametersViewer;}
    public void setShader(Shader s){shader=s;}
    public void setData(Database d){database=d;}
		public SignificanceTest getSignificanceTest(){return significanceTest;}
    public void setSearch(GeoRectangle g){geoRectangle=g;}
    public Results getResults(){return results;}

    public void run(){
		results = new Results();
	if(geoRectangle==null){
	    geoRectangle=database.getBounds();
	}
	if (significanceTest == null){
	System.out.println("Random with null sig test - using Possion");
	significanceTest = new PoissonTest();
        significanceTest.setParameters(parameters);
	}
	System.out.println(""+significanceTest);
	int id=0;
	double width= geoRectangle.width;
	double height= geoRectangle.height;
	double originx= geoRectangle.x;
	double originy= geoRectangle.y;
	double radmin=parameters.getRadMin();
	double radmax=parameters.getRadMax();
	double x,y,r;
	GeoCircle cc;
	
	for(int i=0;i<parameters.getNCircles();i++){
	    notifyProgressEventListener((double)i*100.0/(double)parameters.getNCircles());
	    x = Math.random()*width+originx;
	    y = Math.random()*height+originy;
	    r = Math.random()*(radmax-radmin)+radmin;
	    cc = new GeoCircle(id++,x,y,r);
	    checkCircle(cc);
	}
	notifyProgressEventListener(0.0);
    }
    
    public double checkCircle(GeoCircle cc){
	double stat = (double) 0.0;
	Vector points = database.getPoints(cc);

	try{
		if(significanceTest.isSignificant(points)){
			stat = significanceTest.getStatistic();
			results.addResult(cc,stat);}
			if(stat<0.0){stat=0.0;}
		return stat;
		}catch(SignificanceException e){
			System.out.println(""+e);
			return 0.0;
		}
	}
}